Locked out from Epic Games Launcher after adding Plugin to fresh install of UE 5.6

Same here. Launcher crash after seconds.

Assertion failed: IsValid() [File:D:\build++Portal\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 890]

EpicGamesLauncher (many)
kernel32
ntdll

No previous solutions worked. Deleted and reinstalled the launcher, nothing. Deleted and reinstalled all engine versions: nothing. Deleted all various appdata folders: nothing. Created another account on another pc to see if it was platform related and the crash still happens. Every time I try to install a plugin to ANY Engine version it’s over and then the launcher crashes everytime I open it. At first I thought that was an 5.6 exclusive problem, but now it happens with every other engine version and the launcher is crashing after seconds without the possibility of doing nothing. Nice.

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